So this is pretty long, but my LMP was Dec. 18, 2012. I had sex multiple times between Dec. 22 and Jan. 1, which I ovulated around the 27-30. My periods are very regular. I've never missed one and I was not stressed. On Jan. 8, I had some spotting. It was brownish and pink for a little under 3 days, then it stopped. My period wasn't due until Jan. 15 or 16. The days went on and still nothing. Ive had tender breasts, nauseous, increase in vaginal discharge, headaches, and lower back pains. Last night I did have sex again but I don't think that could case this. Today I woke up and I'm almost 3 weeks late, and have had a muscous-like blood with slight cramping. It's not enough to fill a pad, almost like spotting, but it is definitely worrying me. I've taken at least 5 pt's and they came back negative. I think my HCG isn't high enough to be detected and I wanted to wait until my next period is due (which is Feb. 12 or 13) until I go to the dr, but now I'm not sure what to do. Should I go to the ER or should I schedule for a blood test or ultrasound? I would be about 7 weeks along. I need all the advice I can get. This would be my first baby.

Did you take the pregnancy test with first urine of the morning.
You go to a clinic or your doctor for a blood test to see if you are pregnant